As many of you on this forum may know that I have a unique windshield wiper cam (1978 NY'er) issue to resolve so I can have operational wipers again. Well I have another unusual windshield issue. On the exterior of the windshield, I have about 10 vertical lines about 1/8" wide. It looks like someone went sledding down the windshield. I've tried cleaning it with windex and it doesn't make a difference. It almost like a scuff mark. I run my finger nail across the lines and can't feel any kind of a ridge at all. I was wondering if there is a product that help remove those lines. Driving during the day isn't too bad but driving at night those lines are real distracting. I called Safelite and they said they can't polish windshields anymore because it compromises the integrity of the glass. Any idea of what I can expect to pay for a new windshield?